481721785 has 8 divisors (see below), whose sum is σ = 579524616. Its totient is φ = 384405120.

The previous prime is 481721783. The next prime is 481721789. The reversal of 481721785 is 587127184.

It can be written as a sum of positive squares in 4 ways, for example, as 209438784 + 272283001 = 14472^2 + 16501^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 481721785 - 2¹ = 481721783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (481721783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119356 + ... + 123325.

It is an arithmetic number, because the mean of its divisors is an integer number (72440577).

Almost surely, 2^481721785 is an apocalyptic number.

It is an amenable number.

481721785 is a deficient number, since it is larger than the sum of its proper divisors (97802831).

481721785 is a wasteful number, since it uses less digits than its factorization.

481721785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243083.

The product of its digits is 125440, while the sum is 43.

The square root of 481721785 is about 21948.1613125109. The cubic root of 481721785 is about 783.9086000149.

The spelling of 481721785 in words is "four hundred eighty-one million, seven hundred twenty-one thousand, seven hundred eighty-five".